You plan to conduct a survey to find what proportion of the workforce has two or more jobs. You decide on the 80% confidence level and state that the estimated proportion must be within 1% of the population proportion. A pilot survey reveals that 8 of the 40 sampled hold two or more jobs.

How many in the workforce should be interviewed to meet your requirements? (Round the intermediate calculations to 2 decimal places. Round the final answer to nearest whole number.)

Number of persons to be interviewed